One of the web applications I am working on is an ASP.NET MVC 2 site targeting .NET 3.5 SP1 that uses the Microsoft Report Viewer control with local-mode RDLC reports. I initially developed this application using Visual Studio 2008. The client was OK...
This is probably already well known and well documented, but I still occasionally see people bemoaning the slow load time of some of the controls in the AJAX Control Toolkit . The slow loading problem is particularly noticable when you are debugging pages...